arch/s390/include/asm/compat.h

   1 #ifndef _ASM_S390X_COMPAT_H
   2 #define _ASM_S390X_COMPAT_H
   3 /*
   4  * Architecture specific compatibility types
   5  */
   6 #include <linux/types.h>
   7 #include <linux/sched.h>
   8 #include <linux/thread_info.h>
   9
  10 #define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p(typeof(0?(t)0:0ULL), u64))
  11 #define __SC_DELOUSE(t,v) (t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v))
  12
  13 #define PSW32_MASK_PER          0x40000000UL
  14 #define PSW32_MASK_DAT          0x04000000UL
  15 #define PSW32_MASK_IO           0x02000000UL
  16 #define PSW32_MASK_EXT          0x01000000UL
  17 #define PSW32_MASK_KEY          0x00F00000UL
  18 #define PSW32_MASK_BASE         0x00080000UL    /* Always one */
  19 #define PSW32_MASK_MCHECK       0x00040000UL
  20 #define PSW32_MASK_WAIT         0x00020000UL
  21 #define PSW32_MASK_PSTATE       0x00010000UL
  22 #define PSW32_MASK_ASC          0x0000C000UL
  23 #define PSW32_MASK_CC           0x00003000UL
  24 #define PSW32_MASK_PM           0x00000f00UL
  25
  26 #define PSW32_MASK_USER         0x0000FF00UL
  27
  28 #define PSW32_ADDR_AMODE        0x80000000UL
  29 #define PSW32_ADDR_INSN         0x7FFFFFFFUL
  30
  31 #define PSW32_DEFAULT_KEY       (((u32) PAGE_DEFAULT_ACC) << 20)
  32
  33 #define PSW32_ASC_PRIMARY       0x00000000UL
  34 #define PSW32_ASC_ACCREG        0x00004000UL
  35 #define PSW32_ASC_SECONDARY     0x00008000UL
  36 #define PSW32_ASC_HOME          0x0000C000UL
  37
  38 extern u32 psw32_user_bits;
  39
  40 #define COMPAT_USER_HZ          100
  41 #define COMPAT_UTS_MACHINE      "s390\0\0\0\0"
  42
  43 typedef u32             compat_size_t;
  44 typedef s32             compat_ssize_t;
  45 typedef s32             compat_time_t;
  46 typedef s32             compat_clock_t;
  47 typedef s32             compat_pid_t;
  48 typedef u16             __compat_uid_t;
  49 typedef u16             __compat_gid_t;
  50 typedef u32             __compat_uid32_t;
  51 typedef u32             __compat_gid32_t;
  52 typedef u16             compat_mode_t;
  53 typedef u32             compat_ino_t;
  54 typedef u16             compat_dev_t;
  55 typedef s32             compat_off_t;
  56 typedef s64             compat_loff_t;
  57 typedef u16             compat_nlink_t;
  58 typedef u16             compat_ipc_pid_t;
  59 typedef s32             compat_daddr_t;
  60 typedef u32             compat_caddr_t;
  61 typedef __kernel_fsid_t compat_fsid_t;
  62 typedef s32             compat_key_t;
  63 typedef s32             compat_timer_t;
  64
  65 typedef s32             compat_int_t;
  66 typedef s32             compat_long_t;
  67 typedef s64             compat_s64;
  68 typedef u32             compat_uint_t;
  69 typedef u32             compat_ulong_t;
  70 typedef u64             compat_u64;
  71 typedef u32             compat_uptr_t;
  72
  73 typedef struct {
  74         u32 mask;
  75         u32 addr;
  76 } __aligned(8) psw_compat_t;
  77
  78 typedef struct {
  79         psw_compat_t psw;
  80         u32 gprs[NUM_GPRS];
  81         u32 acrs[NUM_ACRS];
  82         u32 orig_gpr2;
  83 } s390_compat_regs;
  84
  85 typedef struct {
  86         u32 gprs_high[NUM_GPRS];
  87 } s390_compat_regs_high;
  88
  89 struct compat_timespec {
  90         compat_time_t   tv_sec;
  91         s32             tv_nsec;
  92 };
  93
  94 struct compat_timeval {
  95         compat_time_t   tv_sec;
  96         s32             tv_usec;
  97 };
  98
  99 struct compat_stat {
 100         compat_dev_t    st_dev;
 101         u16             __pad1;
 102         compat_ino_t    st_ino;
 103         compat_mode_t   st_mode;
 104         compat_nlink_t  st_nlink;
 105         __compat_uid_t  st_uid;
 106         __compat_gid_t  st_gid;
 107         compat_dev_t    st_rdev;
 108         u16             __pad2;
 109         u32             st_size;
 110         u32             st_blksize;
 111         u32             st_blocks;
 112         u32             st_atime;
 113         u32             st_atime_nsec;
 114         u32             st_mtime;
 115         u32             st_mtime_nsec;
 116         u32             st_ctime;
 117         u32             st_ctime_nsec;
 118         u32             __unused4;
 119         u32             __unused5;
 120 };
 121
 122 struct compat_flock {
 123         short           l_type;
 124         short           l_whence;
 125         compat_off_t    l_start;
 126         compat_off_t    l_len;
 127         compat_pid_t    l_pid;
 128 };
 129
 130 #define F_GETLK64       12
 131 #define F_SETLK64       13
 132 #define F_SETLKW64      14
 133
 134 struct compat_flock64 {
 135         short           l_type;
 136         short           l_whence;
 137         compat_loff_t   l_start;
 138         compat_loff_t   l_len;
 139         compat_pid_t    l_pid;
 140 };
 141
 142 struct compat_statfs {
 143         u32             f_type;
 144         u32             f_bsize;
 145         u32             f_blocks;
 146         u32             f_bfree;
 147         u32             f_bavail;
 148         u32             f_files;
 149         u32             f_ffree;
 150         compat_fsid_t   f_fsid;
 151         u32             f_namelen;
 152         u32             f_frsize;
 153         u32             f_flags;
 154         u32             f_spare[4];
 155 };
 156
 157 struct compat_statfs64 {
 158         u32             f_type;
 159         u32             f_bsize;
 160         u64             f_blocks;
 161         u64             f_bfree;
 162         u64             f_bavail;
 163         u64             f_files;
 164         u64             f_ffree;
 165         compat_fsid_t   f_fsid;
 166         u32             f_namelen;
 167         u32             f_frsize;
 168         u32             f_flags;
 169         u32             f_spare[4];
 170 };
 171
 172 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
 173 #define COMPAT_RLIM_INFINITY            0xffffffff
 174
 175 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
 176
 177 #define _COMPAT_NSIG            64
 178 #define _COMPAT_NSIG_BPW        32
 179
 180 typedef u32             compat_sigset_word;
 181
 182 typedef union compat_sigval {
 183         compat_int_t    sival_int;
 184         compat_uptr_t   sival_ptr;
 185 } compat_sigval_t;
 186
 187 typedef struct compat_siginfo {
 188         int     si_signo;
 189         int     si_errno;
 190         int     si_code;
 191
 192         union {
 193                 int _pad[128/sizeof(int) - 3];
 194
 195                 /* kill() */
 196                 struct {
 197                         pid_t   _pid;   /* sender's pid */
 198                         uid_t   _uid;   /* sender's uid */
 199                 } _kill;
 200
 201                 /* POSIX.1b timers */
 202                 struct {
 203                         compat_timer_t _tid;            /* timer id */
 204                         int _overrun;                   /* overrun count */
 205                         compat_sigval_t _sigval;        /* same as below */
 206                         int _sys_private;       /* not to be passed to user */
 207                 } _timer;
 208
 209                 /* POSIX.1b signals */
 210                 struct {
 211                         pid_t                   _pid;   /* sender's pid */
 212                         uid_t                   _uid;   /* sender's uid */
 213                         compat_sigval_t         _sigval;
 214                 } _rt;
 215
 216                 /* SIGCHLD */
 217                 struct {
 218                         pid_t                   _pid;   /* which child */
 219                         uid_t                   _uid;   /* sender's uid */
 220                         int                     _status;/* exit code */
 221                         compat_clock_t          _utime;
 222                         compat_clock_t          _stime;
 223                 } _sigchld;
 224
 225                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
 226                 struct {
 227                         __u32   _addr;  /* faulting insn/memory ref. - pointer */
 228                 } _sigfault;
 229
 230                 /* SIGPOLL */
 231                 struct {
 232                         int     _band;  /* POLL_IN, POLL_OUT, POLL_MSG */
 233                         int     _fd;
 234                 } _sigpoll;
 235         } _sifields;
 236 } compat_siginfo_t;
 237
 238 /*
 239  * How these fields are to be accessed.
 240  */
 241 #define si_pid          _sifields._kill._pid
 242 #define si_uid          _sifields._kill._uid
 243 #define si_status       _sifields._sigchld._status
 244 #define si_utime        _sifields._sigchld._utime
 245 #define si_stime        _sifields._sigchld._stime
 246 #define si_value        _sifields._rt._sigval
 247 #define si_int          _sifields._rt._sigval.sival_int
 248 #define si_ptr          _sifields._rt._sigval.sival_ptr
 249 #define si_addr         _sifields._sigfault._addr
 250 #define si_band         _sifields._sigpoll._band
 251 #define si_fd           _sifields._sigpoll._fd
 252 #define si_tid          _sifields._timer._tid
 253 #define si_overrun      _sifields._timer._overrun
 254
 255 #define COMPAT_OFF_T_MAX        0x7fffffff
 256 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
 257
 258 /*
 259  * A pointer passed in from user mode. This should not
 260  * be used for syscall parameters, just declare them
 261  * as pointers because the syscall entry code will have
 262  * appropriately converted them already.
 263  */
 264
 265 static inline void __user *compat_ptr(compat_uptr_t uptr)
 266 {
 267         return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
 268 }
 269
 270 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 271 {
 272         return (u32)(unsigned long)uptr;
 273 }
 274
 275 #ifdef CONFIG_COMPAT
 276
 277 static inline int is_compat_task(void)
 278 {
 279         return is_32bit_task();
 280 }
 281
 282 static inline void __user *arch_compat_alloc_user_space(long len)
 283 {
 284         unsigned long stack;
 285
 286         stack = KSTK_ESP(current);
 287         if (is_compat_task())
 288                 stack &= 0x7fffffffUL;
 289         return (void __user *) (stack - len);
 290 }
 291
 292 #endif
 293
 294 struct compat_ipc64_perm {
 295         compat_key_t key;
 296         __compat_uid32_t uid;
 297         __compat_gid32_t gid;
 298         __compat_uid32_t cuid;
 299         __compat_gid32_t cgid;
 300         compat_mode_t mode;
 301         unsigned short __pad1;
 302         unsigned short seq;
 303         unsigned short __pad2;
 304         unsigned int __unused1;
 305         unsigned int __unused2;
 306 };
 307
 308 struct compat_semid64_ds {
 309         struct compat_ipc64_perm sem_perm;
 310         compat_time_t  sem_otime;
 311         compat_ulong_t __pad1;
 312         compat_time_t  sem_ctime;
 313         compat_ulong_t __pad2;
 314         compat_ulong_t sem_nsems;
 315         compat_ulong_t __unused1;
 316         compat_ulong_t __unused2;
 317 };
 318
 319 struct compat_msqid64_ds {
 320         struct compat_ipc64_perm msg_perm;
 321         compat_time_t   msg_stime;
 322         compat_ulong_t __pad1;
 323         compat_time_t   msg_rtime;
 324         compat_ulong_t __pad2;
 325         compat_time_t   msg_ctime;
 326         compat_ulong_t __pad3;
 327         compat_ulong_t msg_cbytes;
 328         compat_ulong_t msg_qnum;
 329         compat_ulong_t msg_qbytes;
 330         compat_pid_t   msg_lspid;
 331         compat_pid_t   msg_lrpid;
 332         compat_ulong_t __unused1;
 333         compat_ulong_t __unused2;
 334 };
 335
 336 struct compat_shmid64_ds {
 337         struct compat_ipc64_perm shm_perm;
 338         compat_size_t  shm_segsz;
 339         compat_time_t  shm_atime;
 340         compat_ulong_t __pad1;
 341         compat_time_t  shm_dtime;
 342         compat_ulong_t __pad2;
 343         compat_time_t  shm_ctime;
 344         compat_ulong_t __pad3;
 345         compat_pid_t   shm_cpid;
 346         compat_pid_t   shm_lpid;
 347         compat_ulong_t shm_nattch;
 348         compat_ulong_t __unused1;
 349         compat_ulong_t __unused2;
 350 };
 351 #endif /* _ASM_S390X_COMPAT_H */